March 20th, 2072 (AP), Northern California Association of City States:

With the surprising acceleration of sea level rise due to the melting of both the Greenland and Antarctic ice sheets over the past decade, the San Francisco canal system was officially abandoned this week. Additional ferry service has been announced between the new major islands of the San Franciscan Archipelago while the boring machines make progress under the Van Ness Passage and Richmond Pass for new transit tunnels.